Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 566
es. Fig. 535 repre-sents the section of such an instrument in about \ the natural size. A systemof two flint and three crown-glass prisms is placed in a tube which moves ina second one; at the end of this is an aperture o, and inside it a slit thewidth of which can by a special arrangement be… … ^ig- 534-
Physics
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